Some screenshots taken from the latest master (11.3.0-dev):

1) Focus style on filter (search):¶

2)Focus style on reload button¶

3) Focus style on a selected page¶

4) Focus style on hide pagetree panel button¶

Further notes¶

- the "hide pagetree panel button" is the last element that can be selected with keyboard (tab) (it comes after the whole pagetree) . Maybe it's by design?

- I could be wrong, but it seems that the "create new page" icons cannot be reached by keyboard navigation;

- The context menu on page cannot be opened by keyboard (but I could be wrong, I have not tested with MacOS accessibility features turned on)

- the filter/search input has a placeholder attribute but no <label> nor title attribute (problematic)

- the filter/search input has an hidden "close" button with no accessible text; its state does not update when switching between visible/invisibile (problematic)

- the reload icon is a <button> with title attribute so it seems ok

- the hide pagetree panel button is a <button> with title attribute; looks fine but

1) it has a role="button" attribute that looks redundant. Opinions?
2) I see that there is also an invisible "show navigation" twin button; the button has a role="button" attribute,too. It becomes visible when the pagetree panel is collapsed (and vice versa with the other one); the state of the
buttons does not update

the tree has been reworked in v13, also keeping a11y in mind, therefore I am closing this issue